Brake-shoe.



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CHARLES F. BINGHAM, OF BUFFALO, .NEW YORK, ASSIGNOR TO VVILL'IAM P. TAYLOR.

Specification of Letters Patent.

Patented. Oct. 1'7. 1905.

Application filed Mey 25, 1905. Serial No. 262,192.

T0 all why/)711, it 'may concern:

Be it known that l, CHARLES F. BINGHAM, a citizen of the United States, residing at Buffalo, in the county of Erie and State of New York, have invented certain new and useful Improvements in Brake-Shoes, of which the following is a specification.

This invention relates to an improved reinforced railway brake-shoe of that class which consists of a cast body and one or more reinforcements which are secured to the body during the casting thereof.

One of the features of the invention resides in a novel form of plate-like reinforcement which is provided with one or more openings or slots in which portions of the cast body interlock.

Another feature has reference to one or more projecting portions which are formed by the stamping of the openings or slots in the plate-reinforcement which extend at au angle therefrom and constitute integral anchoring elements for the said plate-reinforcement.

The object of the invention is to produce a rigid and mutual interlocking of the reinforcement and metal body.

This invention also relates to certain details of construction, all of which will be fully and clearlyhereinafterdescribed and claimed, reference being had to the accompanying drawings, in which a preferred adaptation of the invention is shown.

Figure l is a vertical longitudinal section through the improved brake-shoe on line e e, Fig. 3. Fig. Qisa longitudinal section through the improved brake-shoe cut on the curved line I), Fig. l, concentric with the curved braking-surface of the shoe. Fig. 3 is an enlarged transverse section through the inoproved brake-shoe on line c c, Fig'. 1. Fig. i is an enlarged transverse section on line Z (Z, Fig. l. Fig. 5 is aface view of the improved form of reinforcement. Fig. 6 is an edge view of the improved form of reinforcement.

In referring to the drawings for the details of construction, like numerals designate like parts.

The preferred type of this improved brakeshoe consists of a cast body and one or more plate-like reinforcements which are secured in said body during the casting thereof, and are provided with one or more openings or slots in which portions of the molten metal ofthe shoe-body run to rigidly interlock the brake-shoe and reinforcement together` lnstead of entirely severing the metal pieces which are stamped out to provide the openings or slots. they may be cut partially and then bent outwardly to leave the required slots or openings, and also form projecting parts which serre to more securely interlock the reinforcement in place in the cast body.

The preferred adaptation of this improved brake-shoe comprises a cast body l of the usual shape and two reinforcements 2. These reinforcements are of similar construction, and each consists of fairly narrow strips of sheet or wrought metal curved to the curve of the slme-body and provided with a plurality of longitudinally elongated or oblong' ol'ienings or slots 3, which are approximately centrally located between the two side edges of the reinforcement and extend in longitudinal rows. T he slots 3 are preferably formed with rounded ends, so that no sharp corners are presented to the inter-fitting locking portion 4lof the cast body. The purpose of these slots is not only to produce openings or breaks in the surface of the reinforcements in which the cast metal of the body will interlock, but also to afford means whereby the plates are retained and supported in place during the cooling' of the shoe after casting the body and to reduce the extent of surface of the reinforcement without lessening its width. ln stamping the slots the metal is cut at the ends and one side only, and is bent outwardly to form the projecting parts 5, which serve to ladditionally lock the reinforcement in the body. The project-ing parts 5 are bentvertically upward, and are embedded and locked in that portion of the cast body above the main body portion of the reinforcement, so that if the shoe-body is worn thin enough to entirely expose the lower surface of the reinforcement and said reinforcement is loosened it will still be locked to the remaining portion of the east body by the projecting parts and cannot drop ofi'. The projections 5 are bent alternately from opposite sides of the openings, so that they are arranged in staggered relation. By this means each plate hasa central longitudinal row of openings and two longitudinal series of upwardly-extending projections, each series of projections being approximately half as large in number as the openings, and each projection of each series IOO extending from one side of each alternate opening. The slots 4 and parts 5 are formed by making a series of angular or E-like cuts in the plate-body and bending the parts partially inclosed within the E-like cuts outwardly.

The great advantage of this improvement is that the slotted reinforcement is of the same even width throughout and is rigidly secured in and interloclied to the body by portions of the body itself, which fit into and lock in slots in the central portion of the reinforcements, whereby a mutual interlocking of the reinforcement and cast body is obtained, and the reinforcement is also additionally locled to the body by integral vertical projecting' parts. which are formed of the portions cut and bent from the body of the reinforcement to provide the slots.

l claim as my inventionl. A brake-shoe comprising a cast body and a plate-reinforcement embedded in said body having an opening or slot in which a portion of said body interlocks and the metal cut to form said opening or slot being bent vertically upward at one side of said opening or slot to form an upwardly-extending projection.

2. A brake-shoe comprising a cast body and a plate-reinforcement in said body having a plurality of equally-spaced openings or slots in a central longitudinal row in which portions of said body interlock.

3. A brake-shoe comprising a cast body and a plate reinforcement in said body having a slot in which a portion of said body interlocks: the ends of said slot being rounded and the sides being straight and the metal cut to form said slot being cut at the ends and one side only and being bent upon on the remaining side to form an integral projection.

4. A brake-shoe comprising a cast body and a plurality of parallel reinforcing plates of fairly narrow width each having a plurality of oblong slots in which portions of the body interlock.

5. A reinforcement for brake-shoes consisting of an elongated plate having an opening and an integral upwardly-extending projection formed by vbending that portion of said plate cut to provide the opening.

6. A reinforcement for brake-shoes consisting of an elongated plate having a plurality of angular cuts at regular intervals with the parts adjacent to said cuts bent outwardly to form projecting portions and also leave openings through the plate.

7. A brake-shoe comprising a cast body and a plate-reinforcement in said body having an opening or slot in which a portion of said body interlocks and a projection extending vertically from one side of said opening or slot and embedded in said cast body S. A brake-shoe comprising a cast body and a plate-reinforcement in said body having an opening or slot in which a portion of said body interlocls, an integral upwardlyextending projection embedded in said cast body above the main portion of said reinforcement.

9. A brake-shoe comprising a cast body and a plate-reinforcement in said body having an interior part partially cut and bent to form a projecting upwardly-extending locking part and also provide an opening in which a portion of the cast body interlocks.

l0. A brake-shoe comprising a cast body and a plate-reinforcement in said body having separated interior parts partially cut and bent to form upwardly-eXtending projecting locking parts and also provide openings in which portions of the cast body interlock.

l1. A reinforcement for brake-shoes consisting of an elongated plate having aseries of upwardly-extending projections arranged in staggered relation.

12. A reinforcement for brake-shoes consisting of an elongated plate having a series of openings in a longitudinal row and a series of upwardly-extending projections extending alternately from opposite sides of said openings.

CHARLES F. BINGHAM. litnesses:

L. M. SANGsTER, CHAs. J. PANKow. 

